| 摘要 |
A method is used for measuring perception of an observer using a stimulus output device for presenting stimuli to the observer, and a stimulus manipulation device permitting the observer to modify the presented stimuli by selecting related stimuli from a database of stimuli. The method includes the steps of: a) selecting a sequence of stimuli from the database of stimuli, the stimuli represented as stimulus points contained in a stimulus space; b) determining a reference transformation of a beginning stimulus point of the sequence of stimuli, the reference transformation being presented to the observer by the stimulus output device; c) selecting a limited portion of the sequence of stimuli, the limited portion of the sequence defined between the beginning stimulus point and an ending stimulus point, the limited portion of the sequence being presented to the observer by the stimulus output device; d) determining an observer-defined transformation applied to the ending stimulus point of the limited portion of the sequence such that the observer perceives the observer-defined transformation applied to the ending stimulus point to be perceptually equivalent to the reference transformation applied to the beginning stimulus point; e) selecting a new limited portion of the sequence of stimuli, the new limited portion of the sequence defined by stimulus points selected from the database, at least a portion of the new limited portion having stimulus points different from the stimulus points defining the previously selected limited portion of the sequence; f) determining another observer-defined transformation applied to an ending stimulus point of the new limited portion of the sequence such that the observer perceives the observer-defined transformation to be equivalent to the previous observer-defined transformation; and g) performing steps (e) through (f) until a predetermined number of limited portions of the sequence of stimuli are processed such that the observer perceives each observer-defined transformation to be equivalent to previous observer-defined transformations.
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